i work at the tech shop in sport chek and its not too bad , they wont let you even touch skis (unless there your own) unless you pass the online certification and get training on atleast 5 mounts for that certian brand. if I were you i would just talk to the manager and explain your a very advanced skier and you want the head tech to mount your shit up because if anything is wrong with the mount your going to know right away. so basically just tell him that you need the best guy on it and show him where you want them mounted and mark tips and tails too witht like tape and a marker.
as long as they know your not a weekend warrior they will pay special attention to detail. (good luck)
if you have any issues let me know. ( my uncle is at head office for canada and he will make sure you get new skis if anything goes wrong)